Alain Rufenacht, Anna E. Fox, Grace E. Butler, Charles J. Burroughs, Paul D. Dresselhaus, Robert E. Schwall, Stefan Cular, Samuel P. Benz
This paper presents precision measurements with a prototype cryogen-liquid-free DC Josephson voltage standard that produces a 1 V maximum output. Its cryostat is sufficiently compact that it can be operated on a bench close to devices under test. Compared to the National Institute of Standards and Technology (NIST) programmable Josephson voltage standard (PJVS), this bench-top Josephson voltage standard (BJVS) has a smaller cryostat (only 25 % of the volume), the Josephson junction array circuit is less complex and has only 10% as many junctions, simpler bias electronics, and reduced mechanical cooling requirements. Direct voltage comparison between the BJVS and the PJVS achieved a relative agreement of 5x10−10 at 1 V. With the recent redefinition of the International System of Units (SI), the BJVS becomes a primary realization the unit volt, requiring only access to a standard single-phase power outlet and a GPS signal (SI second).
2020 Conference on Precision Electromagnetic Measurements
precision measurements, prototype cryogen-liquid-free DC Josephson voltage standard, 1 V maximum output, cryostat, NIST, programmable Josephson voltage standard, PJVS, bench-top Josephson voltage standard, BJVS, bench-top Josephson voltage standard, International System of Units, SI, standard single-phase power outlet circuits, voltage measurement, GPS signal
, Fox, A.
, Butler, G.
, Burroughs, C.
, Dresselhaus, P.
, Schwall, R.
, Cular, S.
and Benz, S.
Compact DC Josephson Voltage Standard, 2020 Conference on Precision Electromagnetic Measurements, Denver, CO, [online], https://doi.org/10.1109/CPEM49742.2020.9191805
(Accessed December 1, 2023)